X Insert 1" 8 TPI RH & LH

ITNS 1"8TPI RH/LH Dual Threaded Chuck Insert/Adaptor allows you to 'adapt' your Insert Type NOVA Chuck to a 1"8 Lathe. Allows you to keep the same chuck and accessories if you change your lathe - you only need to change the insert/adpator. The internal thread is 1"8TPI Dual Threaded RH and LH, and the external thread matches the NOVA insert type chucks, to simply and easily screw into the back of your NOVA Insert Type Chuck. This then makes your NOVA insert type chuck ready to attach to your 1"8 threaded lathe spindle. The dual threaded is perfect for lathes with both RH and LH 1"8 Threaded spindles. Precisely machined from 1045 High Tensile Steel.