Satin finish steel construction with 3/8" and 1/2"Sq drive. Also suitable for use with a 21mm(13/16") spanner. Claws grip filter tighter as more torque is applied. Features: Satin finished carbon steel construction with 3/8" and 1/2"Sq drive Also suitable for use with a 21mm spanner Claws grip filter tighter as more torque is applied Specifications: Guarantee:1 Year Model Number: AK642