TheRunLock - The Safest Place For Your Keys When You're Running Portable, weather resistant key safe with combination lock that can be secured anywhere! Internal Dimensions: Length 2.7 Inches x Width 1.6 inches x Depth 1.2 inches. 4 Digit-Combination: Each combination can be set and reset as many times as you want. 10,000 possible combinations! Materials: Corrosion and weather resistant metal alloy construction with rubber sides for easy grip and scratch protection. Plus a strong stainless steel shackle with a protective PVC sleeve.