ลิ่มแท่งเหล็กสี่เหลี่ยมปลายมน (Parallel Keys Round at Both Ends)

Parallel key Both Round 5x5x25

Parallel key Both Round 5x5x20

Parallel key Both Round 10x8x40

Parallel key Both Round 10x8x30

Parallel key Both Round 6x6x30

Parallel key Both Round 5x5x15

Parallel key Both Round 6x6x25

Parallel key Both Round 5x5x30

Parallel key Both Round 8x7x36

Parallel key Both Round 8x7x30

Parallel key Both Round 8x7x25

Parallel key Both Round 8x7x20