Ravin String and Cable Set Black. Specifications for Ravin String and Cable Set: Manufacturer: Ravin Color: Black Additional Features: Compatible with Models R9/10/15/20/29/29X Use with Ravin Press only Features of Ravin String and Cable Set We recommend that strings and cables be replaced at your local pro shop or the Ravin Service Department If you elect to replace the strings and cables use only the Ravin Press. Package Contents: Ravin String and Cable Set Replacement string and cable set for the Ravin R9 R10 R15 and R20 crossbow.