Rtech Starting Blocks (Grey) 2pcs Starting blocks risers developed for young and short motocross riders at the starting gate. Configurable in two different versions: 10cm (4 inch) height blocks, or 15cm (6 inch), provide more stability to get better starts. Features: Made of strong shockproof plastic, durable and lightweight design. Non-slip top surface for better grip. Non-slip strong foots for maximum grip on the ground. Stackable design, saves space in your vehicle/garage. Personalizable side surfaces with name of rider/team. Ergonomic handle for easy transport. Top surface dimensions: H=100 mm version 200 x 130mm. Top surface dimensions: H=150 mm version 175 x 120mm. Base dimensions: 275 x 175mm. Total weight for set H=10cm: 590g. Total weight for set H=15cm: 892g. Maximum capacity allowed: 250kg. Sold as a pair.