Overview Reviews Product Description Model grease cups machined from brass available in the following sizes. 5-40 thread, 3/8" long x 1/4" diameter. 8-32 thread, 7/16" long x 5/16" diameter. 10-32 thread, 1/2" long x 3/8" diameter. Product Videos Custom Field Product Reviews Write a Review Write a Review × Grease Cups Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *