Image Item No. Description  41531  Cylinder 4 x 4 x 1 2/3 with Pin Holes and Center Bar Catalog: Parts: Cylinder  24593  Cylinder Half 2 x 4 x 2 with 1 x 2 Cutout Catalog: Parts: Cylinder  30987  Cylinder Quarter 2 x 2 x 5 with 1 x 1 Cutout Catalog: Parts: Cylinder