Caution

School Holds Set D, E and F are made of polyester (PE) resin, as opposed to School Holds Sets A, B, C, and the Originals, which are made from polyurethane (PU) resin. The main benefit to using polyester resin is that the texture is resistant to polishing. This is especially important when the shape of the holds means their use is highly friction-dependent, such as on slopers or pinches, and when the position of the holds is changed infrequently, such as on a fixed-hold training board like the MoonBoard. Due to the style and shape of Sets D, E and F, we felt that polyester was a more suitable choice of material. The downside to polyester is that it is more prone to chipping or breaking if dropped or when too much force is applied to the fixings. This means you need to handle them with care whilst unpacking and installing the holds. If you drop a hold on a hard surface or even onto another hold, it is likely to chip. If you apply too much force to either the fixing bolt or the pinning screw, you risk breaking the holds. We recommend you fix the holds manually with a hand wrench, and make sure you don’t over tighten either the fixing bolt or pinning screw. Go gently!