No. K10
Pro Line Butterfly Practice Trainer
2,405Our upgraded-pivot trainer in five finishes.

A trainer has the weight and swing of a butterfly knife and no edge at all. It's how people learn the flips — and how many of them end up fidgeting at their desks for years.
2 products
No. K10
Our upgraded-pivot trainer in five finishes.
No. K10 L
A perforated, lighter trainer for faster tricks.
The trainer blade is unsharpened and cut through with holes. It's a practice tool and a fidget toy, not a knife.
Open the latch, hold one handle and snug the pivot screw a little at a time. Too tight and it won't swing; too loose and it rattles.
Learn the basic opening over a bed or a carpet. The trainer is steel, and a dropped one can still mark a floor.
No. Trainers are unsharpened and made for learning and flipping.
Our Pro Line has an upgraded pivot system; the lightweight line has a perforated build for faster flips.
We recommend them for teens and adults, with an adult around for younger flippers.