3 Legged Thing Universal Lever Clamp with Arca-Type QR Plate QR-Octa Release Plate 3/8"-16 Stainless Steel Bolt Hex Key Microfiber Bag The Universal Lever Clamp from 3 Legged Thing is a universal dual-stage lever mechanism for Arca-type compatible quick release plates, L-brackets, and other accessories. The lever clamp is adaptable for left- or right-hand use and can be adjusted to fit different plate profiles. The solid aluminum receiver plate features two security hollows for compatibility with Arca-type release plates with security pins. The included 3/8"-16 stainless steel hex bolt allows it to be attached directly to any threaded tripod head or other device. Arca-Type Compatible Includes QR-Octa Release Plate Dual-Stage Locking Lever Mechanism Left-/Right-Hand Reversible Bubble Level Aluminum Construction