ลิ่มแท่งเหล็กสี่เหลี่ยมปลายมน (Parallel Keys Round at Both Ends)

Parallel key Both Round 7x7x25

Parallel key Both Round 5x5x16

Parallel key Both Round 18x11x65

Parallel key Both Round 16x10x50

Parallel key Both Round 20x12x70

Parallel key Both Round 20x12x100

Parallel key Both Round 18x11x75

Parallel key Both Round 16x10x75

Parallel key Both Round 14x9x50

Parallel key Both Round 12x8x50

Parallel key Both Round 12x8x30

Parallel key Both Round 6x6x20

Parallel key Both Round 6x6x16

Parallel key Both Round 4x4x20

Parallel key Both Round 4x4x16

Parallel key Both Round 3x3x16

Parallel key Both Round 3x3x10

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 8x7x35

Parallel key Both Round 8x7x30

Parallel key Both Round 8x7x25

Parallel key Both Round 8x7x20