- Spann-Boy® as belt tensioner
- with roller
- Spann-Boy® TS as belt tensioner
- with roller
-
- Spann-Box® size 0 with belt tensioner
- with roller
- Spann-Box® size 1 type SR-O
- as belt tensioner with roller
- Spann-Box® size 1 type SR-L
- Tensioning roller on long side
-
- Spann-Box® size 1 type SR-S
- Tensioning roller on front
-