System Zero

［Discontinued］545 piece Steel Screw/Bolt Kit, No. 4, No. 6, No. 8　ZERO SELF TAP SCREW KIT

®System Zero is a registered trademark of Deltight Industries Ltd. System Zero® Tamperproof Screw Kits. Kit contents are various selections of System Zero® security screws in BZP Steel Supplied in polypropylene storage case Kit 1 contains both machine screws and self-tapping screws, and also includes the special drivers required for these screws