Inner Ring Clips ensure the clamp fits snugly around the hose, whilst ensuring the hose is not pinched and damaged during installation.

Fittings Guide:

7.5 - 9.5mm - Pole Hose with EZ-Snap / Rectus Couplings
8.5 - 10.4mm - Pole Hose with Hozelock style couplings
10.4 - 12.4mm - Microbore Hose with EZ-Snap / Rectus / Hozelock Couplings
11.5 - 13.5mm - Microbore/ 6mm Thermobore with EZ-Snap / Rectus / Hozelock Couplings
12.4 - 14.4mm - Minibore / 8mm Thermobore PLUS with EZ-Snap / Rectus / Hozelock Couplings

9.5mm - 12.0mm can be used on Microbore/ 6mm Thermobore
13.0 - 20.0mm - can be used on 1/2 Hose / Minibore / 8mm Thermobore PLUS
18 - 25mm - can be used on 3/4 hose