for 8" ID Hoses feed_Silicone Reducing Sleeve 4 1/4" hole saw –

4 1/4" hole saw – Needed

and then the 4" intake tube fits in the hole

Manufactured to endure the toughest requirements

our hose is sold by the metre and will be supplied in an uncut length of up to 20 metres in total

for 8" ID Hoses feed_Silicone Reducing Sleeve 4 1/4" hole saw –This constant torque clamp can be used on all types of 8" ID intake hoses. It is recommended in any air to air application or any application using silicone hoses. The "constant torque" feature of this clamp assures a firm hold, regardless of the expansion and contraction caused by changes in temperature and pressure. All stainless. Recommended torque specs: 7. 5 ft lbs or 93 in lbs