McKissick blocks come in a variety of types and sizes to suit your specific applications. Some of the types are McKissick 380 Series Crane Block, McKissick Easy Reeve Crane Block, TU-480 Series Tilt-Up Wall Blocks, 680 Series Construction Blocks, Overhaul Balls, Snatch Blocks, Oilfield Tubing Blocks, RJ Style Drilling Blocks and RP Style Traveling Blocks. The following information should be specified during ordering: 1. Stock Number ( if known) 2. Sheave Size 3. Block Number ( Catalog number) 4. Number of Sheaves 5. Type of Bearings 6. Type of Hook or Shackle 7. Wire Rope Diameter