Set of 48 aerator core tines replace part number 10-0260. Fits QUAD-AER 3000 GEN 1 S/N 00001-29999, GEN 2 S/N 30000-39999 and GEN 3 S/N 40000-current. It also fits QUAD-AER 3600 GEN 1 S/N 00001-29999 and QUAD-AER 3600 GEN 2 S/N 30000-39999. Length: 7", 1/2" Closed Spoon, Square hole: 3/8"x3/8", Open top 3/4" diameter.