90 PIECE GUNSMITHING KIT WITH FORCE ASSIST LED BIT DRIVER Smart Drive 90 is an advanced gunsmithing driver set. The main driver features a magnetic bit holder, rubber grip, jeweler s spin top & 360 LED light. It partners with the small close quarters driver to create Force Assist . Force Assist is a proprietary system that helps users to loosen frozen-in-place screws as well as precisely tighten screws. PRODUCT OVERVIEW Polycarbonate lid Large driver with led 87 black oxide coated gun bits Small driver for tight spaces Scope turret tool Magnetic parts tray Slide lock Spin top on main driver Force assist technology helps loosen stuck screws and precisely tighten screws Rubberized handles for sure grip No Shadow led on main driver Hammer surface Magnetic tip Small driver for tight spaces. Doubles as force assist lever 87 standard & metric black oxide coated gun bits Hollow ground/square cut slotted tips: 3mm Group (9 bits), .5mm-1mm thickness 3.8mm Group (4 bits), .7mm-1mm thickness 4.7mm Group (4 bits), .6mm-.9mm thickness 5.4mm Group (10 bits), .4mm-1.2mm thickness 6mm Group (7 bits), .6mm-1.2mm thickness 7mm Group (9 bits), .6mm-1.5mm thickness 7.6mm Group (5 bits), .8mm-1.5mm thickness 8.6mm Group (6 bits), .7mm-1.6mm thickness 9mm Group (6 bits), .8mm-1.8mm thickness Torx: T10, T15, T20, T25 Phillips: PH0, PH1, PH2, PH3 Metric hex: 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm Standard hex: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 15/64", 1/4"