Ultimate Arms Gear Glock Original SP00448 Magazine Spring 9mm/10mm/.357/.40/.45 Glock 17 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 Mag 10 Coil 3/32 Punch Armorers Gunsmith Tool Package Includes: Glock SP00448 + Ultimate Arms Gear Pro Disassembly 3/32 Pin Punch Armorers Gunsmith Tool Fits Glock Models: G17, G17L, G18, G20, G21, G22, G23, G24, G25, G26, G27, G28, G29, G30, G31, G32, G33, G34, G35 (including Gen4) G17, G18, G34: all 17-rd mags, incl. pre-ban, LE-marked & current unmarked (std 10-coil spring). G20: for all 15-rd mags, incl. pre-ban, LE-marked, and current unmarked. G21: use only in pre-ban, older LE-marked mags with 3955 follower & 10-rd mags. G22 through G35: pre-ban mags & older LE-marked mags (do not use with Tac-Lights). Ultimate Arms Gear Pro Disassembly 3/32 Punch Armorers Gunsmith Tool Designed to Punch Pins. Features a Polymer Handle and Steel Tip for an Ultra Durable High End Tool. Diameter is 3/32 of an inch or 2.5mm.