Electrician's Drill Bit Tools: slotted bits for electricians are suitable for , socket panels and so on. Widely used in electric screwdrivers, air drills, cordless drills or any other power drill with 1/4 inch hex shank DESIGN FOR ELECTRICIAN: Electricians screwdriver bits are design for electrician, type of head is FPH2 Slotted bits, Suitable for maintenance on , Switch Plate, Electrical Enclosure and so on. PREMIUM S2 STEEL: Electrician bit set made of S2 alloy steel, hardened core to increase bit strength and reduce fracture. Black 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:Red & Black Material:Metal Package Contents: 1 * 65mm/110mm FPH2 Impact Screwdriver Bit Set 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.