[DETAIL] [Features]: 1.Made of high quality steel material, durable for use. 2.Easy to expand the tube, easy to use, complete specifications. 3.High temperature quenching, sturdy and durable, and more labor-saving expansion. 4.Expand the copper pipe to make the two copper pipes interconnected when the air conditioner is installed. 5.It needs to be installed on hand electric drill. [Specifications]: Material: 45# Steel Height: approx.45mm/1.77in; 50mm/1.97in; 55mm/2.16in Size: 7/8（22.2mm），3/4（19mm），5/8（15.9mm），1/2（12.7mm），3/8（9.5mm），1/4（6.3mm) Quantity: 6pcs/set [Package Includes]: A: 5 pcs/set x Pipe Expander B and C: 6pcs/set x Pipe Expander [ATTRIBUTES] - Hign-concerned Chemical: None - Brand Name: NoEnName_Null - Origin: Mainland China - Hign-concerned Chemical: None - Brand Name: NoEnName_Null - Origin: Mainland China - Certification: None - Model Number: 6pcs - DIY Supplies: Electrical - Material: High Speed Steel - Type: Core Drill Bit - Use: Other - Length: 55mm