TWIST Mount Screw Down Adapter and Tripod ExpansionTWIST Mount Screw Down Adapter and Tripod Expansion is a kit that allows TWIST Mount Spuds to be attached to any camera or cheeseplate using either an ARRI 3 8 16 with locating pins adjacent or two 1 4 20 threaded holes up to 33mm apart center to center. TWIST Mount Screw Down Adapter can be used on an ARRI 3 8 16 with locating pins and has a variable friction 15mm rod clamp with ratcheting thumbscrew. TWIST Mount Tripod Expansion Adapter Only