Product Code	D x D1/mm
RT	25 x 20
RT	32 x 20
RT	32 x 25
RT	40 x 20
RT	40 x 25
RT	40 x 32
RT	50 x 20
RT	50 x 25
RT	50 x 32
RT	50 x 40
RT	63 x 25
RT	63 x 32
RT	63 x 40
RT	63 x 50
RT	75 x 40
RT	75 x 50
RT	75 x 63
RT	90 x 63