Made of aluminum, not rust. Sturdy and durable. New design heat sink, greater contact area, improve the cooling effect. Fit for 3D printing accessories. Please Note: This heat sink is suitable for LV8729, TMC2100 and DRV8825. Because the A4988 driver chip is too small, it is not recommended to used in A4988, if improper operation, it's easy to touch the pins. Material: Aluminum Color: Blue Size: 15x14x13mm/0.59x0.55x0.51in (Approx.) ============================================================= Kita menggunakan manajemen produk selama iklan masih ada stok masih ada Pengiriman 2 kali pengiriman pagi jam 12 dan sore jam 4 Pengiriman Senin Sampai Sabtu, hari minggu ada pengiriman max jam 9 pagi, input resi tetap senin Jika kurang jelas dapat menghubungi kami via wa ke nomer yang tertera di toko ============================================================= Harga per pcs