Nunchuck 33 is the perfect training device for developing the vertical grip strength. It is the foundation, the whole foundation. Challenge for beginners, advanced and professionals. You can order an existing construction or a construction that you purchase from us. As seen at OCR steeplechase and ninja warrior events around the world, this is the perfect training tool that will undoubtedly take you further in your training schedule and races. Painting process: sandblasting + powder coating KOMAXIT. Color: matt black with a fine texture for better hold. Material: steel.