Paddle Set / Noma 302565Pack Size:1Noma 302565NHC 279-0525, Rotary 5533, Rotary 13169Noma 20" snowthrower C2030-010 and Craftsman 20" snowthrower C950-52103 Square paddles are 1 3/4" W x 3 3/4" L x 1/4" THK, Square paddles have 3 mount holes, Half round paddles are 11 1/8" OD x 1/4" THK, Half round paddles have 6 mount holes, 6 piece set