TURN KEY HOSE CLAMP SZ20 by IDEAL MfrPartNo 807Y20052 Hand tighten the "Turn-Key" hose clamp for a leak proof seal, even in tight spaces For a tamper-resistant connection, pull off the turn key after tightening Stainless steel band and housing Plated steel screw with injection molded turn-key removable and reusable Fits heater hose sizes