For Keyed Chucks - The Replacement Key fits keyed chucks. The right replacement key type (A/B/C/D/F/G) has to be chosen. Features and Benefits: • For Keyed Chucks • Replacement Key fits keyed chucks • Right replacement key type (A/B/C/D/F/G) has to be chosen Specifications: Ref. type: S3 Replacement key, type: A Outer length (L1): 110mm Key length (L2): 50mm Key diameter (Z): 8mm Key width (KW): 4mm