Ot of 5 Coloplast Peristeen Rectal Catheters (Small) 29128 - For Training / Prop Use. Up for sale is a lot of 5 genuine Coloplast Peristeen Rectal Catheters (Small, Ref: 29128). Model / MPN: 29128. Quantity: 5 individual units includes catheters and components aspictured in.