<< >> CORE BORE 4-Speed Mounted Hydraulic Motor CORE BORE 4-Speed Mounted Hydraulic Motor More Views Product Description 4-Speed Mounted Hydraulic Motor 160/320/480/960 RPM at 12 GPM Minimum RPM -110 at 8 GPM Maximum RPM-1600 at 20 GPM 12” drilling capacity without extension 24” drilling capacity with extension 4-Speed Mounted Hydraulic Motor Part # Cat # 4250021 84446 Additional Information Part Number 4250021 Catalog Number 84446 Diameter No Size No