• Strong, linear spring closing action

 • Unique forked-shaped jaws provide uniform compression for safe, leak-free seals

 • Larger sizes have screw-locking device with spring for maximum security

 • Solid brass clamps are coated with a smooth, black, corrosion-resistant finish for added durability

 • Stainless steel clamps have bright, polished finish for years of chemical-impervious use and are made entirely of stainless steel? including springs, pins and knurled adjustment knobs

Thomas Pinch Clamps are the undisputed industry leader for safety and security. Progressive springs make clamp handling easy, yet provide for incredibly even seals. Threaded post on screwlocking device is precision machined for durability and ease of use; post is riveted onto clamp body for security. Knurled nut is permanently mounted on post and won’t get lost or damaged. Heavy-duty metal construction won?t deform even under the hardest use. Surface is free of burrs and irregularities that could damage costly glassware. All clamps are manufactured to our stringent standards for maximum life under tough, daily use. Designed primarily for securing the joint and not intended to replace the usual clamps, rings, tripods, etc.