Dixon Double Bolt Clamps w/ Saddles Plated Iron 3-1/2" x 3-13/16" Hose O.D | eBay
IMS Company - Spiral Type Hose Clamp with Double Bolt, Zinc Plated Steel, Counterclockwise Spiral, For Use With 2" ID Loader Hose. 135765 Hopper Loader Hose Clamps
CLAMP-DBC-1125 -
hengsheng double bolt hose clamp| Alibaba.com
Dixon Plated Iron Double Bolt Clamps w/out Saddles - John M. Ellsworth Co. Inc.