Wera 05056660001 853/1 TZ 1/4'' Hex Phillips ACR Insert Bits are high quality bits designed for phillips screws and feature torsion zone, where kinetic energy is diverted from peak loads. Wera 853/1 TZ Phillips ACR ® 1/4'' Hex Insert Bit are ACR Bits which stands for ant-cam-out ribs. ACR ® have ribs at the drive tip that protect against slipping out of the screw head. It is recommended that ACR ® bits are matched with ribbed ACR ® screws for maximum effect.
Wera 853/1 TZ Phillips ACR ® 1/4'' Hex Insert Bits are ductile and tough for hard materials and are designed with torsion zone for absorption of peak loads, this enhances the service life of the bit. Wera 853/1 TZ Phillips ACR ® 1/4'' Hex Insert Bits feater Wera's Connecting Series 1 and are suitable for holders as per DIN ISO 1173-D.