Dixon Boss® 350 Clamp 2 1/2 in. Hose ID Zinc Plated Iron 4 Bolt and 4 Finger - John M. Ellsworth Co. Inc.
4 Bolt Boss Clamp - ABS
Making Hose Assemblies Requires Knowledge and Experience: Boss Clamp Dos and Don'ts
R 270 Boss head clamp | Stirrers.net
Boss head clamp with Support rod, 2 in 1 – www.labshops.com
Description - H 44 Boss head clamp
Stand, Boss and Clamp | Hurtwood Science
Stand clamp with boss head, 38 mm, 60 mm | Clamps and rings | Accessories | Frames, platforms and attachment | Transport, Laboratory Equipment, Tools | Labware | Carl Roth - International
2-Prong Clamp with Boss Head, PVC Coated Grips | Southern Labware