Caltric Paddles & Belt for Toro 38451 21 Power Clear Snow Throwers 2011-2014Caltric Premium Quality Replacement Parts. Auger Drive Belt & Paddle Set. For Toro Snow Thrower. 38451 (621 R) – Toro 21 Power Clear Snow Thrower (SN: 312000001 – 312999999) 2012. 38451 (621 R) – Toro 21 Power Clear Snow Thrower (SN: 313000001.