Pocket Knife Brass Corby Bolts Screw , EDC Knifemakers Corby Knives Pivot Pin Fasteners Rivets,DIY Knife Handle Studs Tactical survival knife rivets shaft screws Material: stainless steel Size:each fastener is 25 mm (1") long screwed closed, the outside diameter of the shaft is 4 mm (0.16") and the outside diameter of the head is 6 mm (0.236")Great option for natural handle materials like bone or horn, that may swell or shrink with changes in humidity or temperature Screw slot can be sanded off when finishing, to create the appearance of solid handle pinsyou can get 10 sets (Screw & Stud)Noted:When the ladder drill is used, the target should be fixed, hand-held electric drill or bench drill should be operated, and a strong operating skill is needed to make it sound intact. It can also be done with 2 different hole diameter drill bits, and the effect is the same The method of use is very simple: first use the step drill to make a step hole, then tighten the screw with a flathead screwdriver, and then polish the part that has leaked from the surface