TL-6000 Series Dynamometers Feature: Aluminum (10,000lb and Under), Stainless Steel (25,000-160,000lb) Construction, Peak Hold Feature, Self Contained Five Digit 1.2" Display, Optional Wireless or Hardwire Readouts (See Options and Accessories), Operates on Two 9V Batteries (Included), NEMA 4X/IP 65 Enclosure, 200% Safe Overload, Low Battery, Peak Hold, Setpoints 1 & 2, lb, kg, tons, metric tons, and DekaNewtons Annunciators. **Shackles Not Included, See Options and Accessories**.