• Type: American-style worm drive mechanism.
• Material: Typically stamped from 304 or 201 Stainless Steel for corrosion and rust resistance.
• Mechanism: Perforated continuous-band design with a slotted hexagonal tension screw.
• Sizing System: Standard trade sizes are usually specified by either an SAE size number (e.g., #12, #28, #88) or by their explicit diameter range in millimeters/inches stamped directly on the band