Electrician's Drill Bit Tools: Pozidriv slotted bits for electricians are suitable for , socket panels and so on. Widely used in electric screwdrivers, air drills, cordless drills DESIGN FOR ELECTRICIAN: Electricians screwdriver bits are design for electrician, type of head is FPH2 Pozidriv Slotted bits, Suitable for maintenance on , Switch Plate, Electrical Enclosure and so on PREMIUM STEEL: Electrician bit set made of alloy steel, hardened core to increase bit strength and reduce fracture. phosphate to prevent rust, be more stronger and more than others, don't worry it be rust or in the rain High Precision Bits: Straight concentric shafts are not easy to slip and jiggle. Each edge can accurately lock the screws, not damage the screws and screwdriver bits, safe and sturdy to use Enhanced Safety & Efficiency: Features an anti-slip design and a protective insulating rubber sleeve to help reduce the risk of electrical shock and improve user safety during operation Color: Black Material: Alloy Steel Package Contents: 20 x Impact Screwdriver Bit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.