Check the listing for details. Master Gunsmith Screw Kits -- Firearm, scope ring, base, or plug screw kits. Condition: New. Listed at 49.98 USD. Pachmayr® Master Gunsmith™ Screw Kits ✔NEW ✔Low Price ✔U.S. Shipping ✔Authorized Dealer The Perfect Addition to Every Gunsmith's Bench Three Kits Available -- Use Drop-Down Menu to Select:03054 -- 277 Piece Firearms Screw Kit -- Blue BoxContains 12 each of 23 different "hard to find" screws that fit common applications in many guns. Screws are contained in handy storage kit and kit includes tweezers.03058 -- 142 Piece Hex Head Scope Ring and Base Screw Kit --Red BoxContains 10 each of 14 premium 3/32" hex style scope and base screws. These difficult to find screws are favored non-slip replacements for slotted screws. Set includes tweezers and thread size gauge/shortening jig.03061 -- 202 Piece Scope Ring and Base Screw Kit -- Yellow BoxContains 10 each of 20 sizes of premium Torx-style 6-Lobe scope and base screws. These difficult to find screws are favored for their non-slip drive head. Kit includes tweezers and thread size gauge/shortening jig. Compatible with all 6-Lobe style screwdrivers and bits. Zoom in on the individual pictures for a more detailed listing of what is included with each kit. The shrink-wrapped color coded plastic storage boxes measure roughly 7" x 5" x 1" NOTE: Orange Box (Plug Screw Kit) shown in picture no longer available. This ad is for one kit, your choice.