Feature:1. PACKAGE INCLUDES: A pack of 4 rolls of cassette tape for making your own reel to reel cassettes, each pack can make 1 cassette tape, only 4 reels and 2 wheels are included (NOTE: you need to prepare glue to make it)2. STABLE PERFORMANCE: The cassette tape is well made and stable performance, ensuring fluent tape movement and precise winding to produce clear and reliable recordings.3. PREMIUM MATERIAL: Reel to reel cassette tape set is made of premium aluminum alloy and ABS material, which can withstand frequent use and provide excellent durability for long recording sessions.4. PRECISE SIZE: 40mm reel diameter ensures proper tape tension and prevents tape slippage during playback or recording. The thickness of the reel is 0.25mm, providing optimal stability for precise winding.5. PROFESSIONAL DESIGN: Designed for music lovers and collectors, reel to reel cassette tape allows you to personalize your sonic enjoyment.Specification:Item Type: Reel to Reel Cassette TapeMaterial: Aluminum Alloy, ABSSize:Reel Diameter: Approx. 40mm/1.57inReel Thickness: Approx. 0.25mm/0.01in.Package List:4 x Reel2 x Wheel 1 x Plastic Box Note:1. There is a film on the surface of the reel.2. Please allow some error in manual measurement.