The Merkur 34c HD is a classic safety razor built to last a lifetime. The 34c razor is well balanced in hand and made to last a lifetime. The 34C HD razor, extremely popular for its extra-thick handle, is otherwise identical to Merkurs original, internationally-revered, safety razor. The HD represents. Before purchasing, please read the Maintenance of Merkur Safety Razors. The Merkur 34C Heavy Duty Classic has been named the world's best razor.