Silverline Security Bit Set 33pce 25mm

Amazon

Chrome vanadium For cordless screwdrivers and drills Magnetic bit holder, torq-set bits, spanner bits, tri-groove bits, hex bits and tamper proof star bits 1 x 65 mm bit holder, Weight: 0.28 Pounds, Manufacturer: SLTL4

Electrical World

Chrome vanadium. Compatible with most tamper proof fasteners. Magnetic bit holder, torq-set bits, spanner bits, tri-groove bits, hex bits and tamper proof star bits.