Used on the following models:

Hammer Strength
Abdominal Crunch - MTSAB
High Row - MTSHR
Leg Curl - MTSLC
Leg Extension - MTSLE

Life Fitness
Assisted Dip Chin - PSADCSE
Back Extension - PSBESE
Back Extension - PSBESE
Back Extension - PSBESE - Platinum
Fly/Rear Deltoid - OSFLY - Platinum
Horizontal Calf - PSHCSE
Lat Pulldown - PSPDSE
Optima Series - OSLR - Platinum
Optima Series - OSMP - Platinum
Pectoral Fly/Rear Deltoid - PSFLYSE - Nickel
PSRWSE Pro Series II Seated Row
PSSLPSE Pro 2 Series Seated Leg Press
Seated Leg Curl - (PSSLCSE)
Triceps Extension - PSTESE