6 inch by 19.5 inch back roller with smooth and half sphere texture. Its Big!
 

Print in Parts, uncut PLA internal included so you can cut to your own preference or print on a large form factor printer.

Print PLA with min of 15 infill PLA-CF recommended with 25% infill.

Print TPU shell will very little infill, adjust to preference. 2 Walls with 5% infill with TPU 95A.

Print TPU twice, slip on TPU over PLA before gluing PLA together.