WERA 05071106001 3840/4 Bits, stainless, 1/8 x 3 1/2 inches
Stainless Steel Bits: Wera stainless steel bits are manufactured out of stainless steel so unsightly rust can be avoided. The stainless steel bits from Wera are vacuum ice-hardened and have the hardness and strength needed for screw connections.
WERA 05059663001 840/4 Z bits, 1/8 x 3 1/2 inches
Tough Wera bits for hexagonal socket screws, for universal use. 1/4″ hexagon drive (Wera connecting series 4). Tough bits: Tough Wera bits prevent the tip from breaking prematurely. Z-bits usually are the bit for universal screwdriving applications.
WERA 05135094001 840/4 Z bits, 1/8 x 2 inches
Tough Wera bits for hexagonal socket screws, for universal use. 1/4″ hexagon drive (Wera connecting series 4). Tough bits: Tough Wera bits prevent the tip from breaking prematurely. Z-bits usually are the bit for universal screwdriving applications.