4mm diameter barrel shifts a whopping 722 cc of air per stroke

but don't need the full shebang kit of all the sizes

Materials: Extruded and CNC machined aluminium

cast aluminium construction

Cons: Could be too much protection for some

Bell Lil Ripper Helmet - Toddler - One Size Fits Most - Adore Gloss Pink - AS-NZS�2063-2008 Standard Out of Stock 4mm diameter barrel shifts aGive your little shredder the protection they need with the Lil' Ripper helmet from Bell. With it attached they'll be able to safely travel in style, whether it's in a trailer, on a bike seat, or a balance bike. The helmet comes with a retention system to allow you to dial in a secure fit and the no pinch side buckle means it can be fitted quickly and easily, even when they're chucking a tanty. Perhaps most importantly of all, the Lil' Ripper is