Range: 2-7/8" to 4-3/8". The most efficient, versatile tool on the market. Will operate both vertically or horizontally. Fine tooth ratcheting lock permits bands to be contracted in extremely small increments. Kit includes pliers and 6 bands.

The Hastings Ring-O-Matic Piston Ring Compressor Pliers incorporates a precision locking action for exact holding and release of piston ring bands.

Hastings Quick Change Bands are a fast and efficient way to install piston rings on all types of engines. Use them with the Hastings Ring-O-Matic Pliers (p/n 1670). Fits piston sizes: 3-7/8" to 4-1/8".

Hastings Quick Change Bands are a fast and efficient way to install piston rings on all types of engines. Use them with the Hastings Ring-O-Matic Pliers (p/n 1670). Fits piston sizes: 4-1/8" to 4-3/8".

Hastings Quick Change Bands are a fast and efficient way to install piston rings on all types of engines. Use them with the Hastings Ring-O-Matic Pliers (p/n 1670). Fits piston sizes: 4-1/2" to 4-3/4".

Hastings Quick Change Bands are a fast and efficient way to install piston rings on all types of engines. Use them with the Hastings Ring-O-Matic Pliers (p/n 1670). Fits piston sizes: 4-3/4" to 5".

Hastings Quick Change Bands are a fast and efficient way to install piston rings on all types of engines. Use them with the Hastings Ring-O-Matic Pliers (p/n 1670). Fits piston sizes: 5" to 5-1/4".

Hastings Quick Change Bands are a fast and efficient way to install piston rings on all types of engines. Use them with the Hastings Ring-O-Matic Pliers (p/n 1670). Fits piston sizes: 5-1/4" to 5-1/2".

Hastings Quick Change Bands are a fast and efficient way to install piston rings on all types of engines. Use them with the Hastings Ring-O-Matic Pliers (p/n 1670). Fits piston sizes: 5-1/2" to 5-3/4".

Hastings Quick Change Bands are a fast and efficient way to install piston rings on all types of engines. Use them with the Hastings Ring-O-Matic Pliers (p/n 1670). Fits piston sizes: 5-3/4" to 6".

Our Aviation Piston Ring Compressor features a quick-change design to speed up piston ring installation. It includes the famous Hastings Ring-O-Matic® pliers and bands that operate in all positions: not just vertically or horizontally.

Installs rings from 3" (76.2mm) to 5" (127mm). Superior to regular ring compressors in the following ways: Low Friction! Wrinkle band cuts friction in half. Ring slides in easily; Wrinkle Band can't slip down into cylinder