
Relton (P-14) 7-8" Porcelain Hole Saw Complete Drill Bit
Relton P-14 Core Specs
Technical Specifications
| Manufacturer | Relton Corporation |
| Part Number | P-14 |
| Cutting Diameter | 7/8 inch (22.2mm) |
| Spring Mechanism | Integrated depth control spring |
| Cut Type | Beveled groove, chip-free finish |
| Material Compatibility | Porcelain enamel surfaces over cast iron |
| Installation Stage | Second step in multi-stage countertop drilling process |
Where This Drill Bit Works
The Relton P-14 is designed specifically for porcelain-enameled cast iron countertops commonly found in vintage kitchen and bathroom installations. Use this bit after completing your pilot hole with a carbide-tipped bit, and before final penetration through the cast iron base. The spring-loaded mechanism ensures you cut cleanly through the brittle porcelain layer without chipping or cracking, while stopping before the metal substrate. This is a specialized tool for plumbers and contractors installing faucets, water filtration systems, soap dispensers, and other fixtures in porcelain countertops. The 7/8 inch diameter accommodates standard water line penetrations and mounting hardware.
Relton P-14 Core Specs
Technical Specifications
| Manufacturer | Relton Corporation |
| Part Number | P-14 |
| Cutting Diameter | 7/8 inch (22.2mm) |
| Spring Mechanism | Integrated depth control spring |
| Cut Type | Beveled groove, chip-free finish |
| Material Compatibility | Porcelain enamel surfaces over cast iron |
| Installation Stage | Second step in multi-stage countertop drilling process |
Where This Drill Bit Works
The Relton P-14 is designed specifically for porcelain-enameled cast iron countertops commonly found in vintage kitchen and bathroom installations. Use this bit after completing your pilot hole with a carbide-tipped bit, and before final penetration through the cast iron base. The spring-loaded mechanism ensures you cut cleanly through the brittle porcelain layer without chipping or cracking, while stopping before the metal substrate. This is a specialized tool for plumbers and contractors installing faucets, water filtration systems, soap dispensers, and other fixtures in porcelain countertops. The 7/8 inch diameter accommodates standard water line penetrations and mounting hardware.
Description
Relton P-14 Core Specs
Technical Specifications
| Manufacturer | Relton Corporation |
| Part Number | P-14 |
| Cutting Diameter | 7/8 inch (22.2mm) |
| Spring Mechanism | Integrated depth control spring |
| Cut Type | Beveled groove, chip-free finish |
| Material Compatibility | Porcelain enamel surfaces over cast iron |
| Installation Stage | Second step in multi-stage countertop drilling process |
Where This Drill Bit Works
The Relton P-14 is designed specifically for porcelain-enameled cast iron countertops commonly found in vintage kitchen and bathroom installations. Use this bit after completing your pilot hole with a carbide-tipped bit, and before final penetration through the cast iron base. The spring-loaded mechanism ensures you cut cleanly through the brittle porcelain layer without chipping or cracking, while stopping before the metal substrate. This is a specialized tool for plumbers and contractors installing faucets, water filtration systems, soap dispensers, and other fixtures in porcelain countertops. The 7/8 inch diameter accommodates standard water line penetrations and mounting hardware.












