Comparison : Item # 3 x .170, 6061-T6 Aluminum Alloys - Channels
Item # 3 x .258, 6061-T6 Aluminum Alloys - Channels
Item # 3 x .356, 6061-T6 Aluminum Alloys - Channels
Item # 4 x .180, 6061-T6 Aluminum Alloys - Channels
Item # 4 x .247, 6061-T6 Aluminum Alloys - Channels