Oar shaft and conveyor belt: what they have in common

1. Step 1. Oar shaft — is part of — Oar. A long rod.
2. Step 2. Oar — is part of — Kayak. A double-bladed paddle.
3. Step 3. Kayak — is made of — Leather. The frame was covered with skins.
4. Step 4. Leather — is material for — Conveyor belt. The first belts were leather.

Open Evothings