Glarks 110 Sets 6 Sizes Chicago Screws Leather Rivets with Punch and Screwdriver Kit (Black) Review (2026)

Who This Kit Fits

This kit bundles 110 sets of Chicago screws, a two piece post and screw fastener widely used in leathercraft for belts, straps, bag handles and bookbinding, across six sizes ranging from M5 by 4mm up to M5 by 12mm in overall post length. Unlike a rivet, a Chicago screw threads together, which lets the piece be opened and reattached later, useful for adjustable straps or for replacing a worn belt tip without cutting stitches. Beginners setting up a first leathercraft toolkit benefit most from this listing since it includes a punch and a screwdriver alongside the hardware, avoiding a separate purchase to actually install the screws. The black finish suits dark leather goods, black belts, bags and boot straps, where a bright silver or brass post would otherwise stand out against the color.

What's in the Box and Sizes

According to the listing, the kit includes 110 total sets split across six sizes, M5 by 4mm, 5mm, 6mm, 8mm, 10mm and 12mm, made from carbon steel with a black finish, along with a hole punch and a matching screwdriver for installation, all packed into a plastic storage case. Carbon steel gives the screws more resistance to bending under repeated tightening than a softer alloy would, which matters since Chicago screws are meant to be removable rather than a permanent one time fastener like a solid rivet. Having six sizes on hand covers thin wallet leather through much thicker belt and strap material without needing to guess a single size upfront, since the correct post length depends on how thick the stacked leather layers are at the fastening point.

Installing and Living With Them

Installation starts with punching a hole through the stacked leather layers at the correct diameter for the screw post, then threading the two halves together by hand before finishing with the included screwdriver to snug them without overtightening, since forcing a Chicago screw too tight can strip the shallow threads found on smaller diameter posts. Choosing the right post length matters more than it might seem, since a post that is too short will not fully engage the threads through thick leather, while one that is too long leaves a gap that looks unfinished and can work loose. Because the fastener is removable, straps and belt pieces using Chicago screws can be resized or swapped later without restitching, an advantage over rivets for anyone who expects to adjust a piece down the line. Over time, the black coating on the screw heads can wear thin at contact points, showing a lighter metal underneath, which is a cosmetic issue rather than a structural one.

Trade-offs Against Other Chicago Screw Kits

A competing kit from a different brand bundles 130 sets across seven sizes in a bronze finish, offering more pieces and one additional size step for buyers who want the widest possible range, though without the black cosmetic option this kit provides. A simpler 100 set kit in five colors covers more color variety for buyers matching hardware to different leather tones, but drops the black specific focus and the punch and screwdriver combo that makes this Glarks kit more self contained for a first purchase. Buyers who already own a punch and screwdriver from prior leathercraft purchases may find better per piece value in a hardware only kit without the duplicate tools, since Chicago screw sets sold without a punch typically cost less per set.

Bottom Line

First time leatherworkers assembling a belt, strap or bookbinding toolkit get real value from having 110 sets across six sizes plus the punch and screwdriver in one purchase, especially for black finished projects where the coating matches the leather. Buyers who need the widest possible size range should compare against kits offering seven or more sizes, and anyone who already owns a punch and screwdriver may prefer a hardware only listing instead of paying for duplicate tools. Expect the black finish to show wear at contact points over repeated use, which is a cosmetic trade-off rather than a functional failure of the fastener itself.

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