Apex #1 Phillips ACR Insert Bit, 1/4'' Hex Drive (440 1 ACR1 RX Ivy Classic Industries manufactures an extensive line of ribbed insert and power bits. High-grade S-2 Tool Steel for extra strength and durability The bits are heat treated and tempered to Rockwell hardness 60-62 and the sandblasted finish prevents rust. Impact Driver Bits Ivy Classic 45703 1" #2 Phillips ACR Reduced Insert Bit, Impact Plus ACR #2 Reduced Insert 1 Inch 100 Pack S-2 Steel ACR® bits reduce cam-out stripping of the screw & bit. Forged ribs grip the screw providing greater torque. All IVY Classic insert bits are manufactured from S-2 Tool Steel. The Rockwell Hardness is 60-64 HRC. Bulk - Sealed plastic bags with clearly marked labels. Insert bits also available in hex jars and carded Designed to withstand the high torque (rotational force) of impact drivers, Impact Plus (Registered Trademark) These ribbed bits feature forged ribs that grip the screw and reduce cam-out stripping of screws and bits. Phillips ACR, Power Bit, PK 5 - Grainger Length: 1-inch, Size: Phillips ACR #2 reduced, Shank: 1/4-inch hex