เครื่องนับฟองอากาศ CO2 พร้อมวาล์วตรวจสอบ สําหรับตู้ปลา

Features: 1. High quality and low price 2. Small and compact 3. Easy to install and replace 4. A non-return function to prevent the backflow when the pressure changes 5. Made of tough material for long-term use Specifications: 1. Material: Aluminium Alloy & Acrylic 2. Color: Silver 3. Dimensions: Single-head?(3.11 x 0.79)" / (7.9 x 2.0)cm (L x Dia.) Dual-head?(3.23 x 0.82)" / (8.2 x 2.1)cm (L x Dia.) 4. Net Weight: Single-head: 1.30oz/37g Dual-head: 1.41oz/40g Included in the Package: > 1 x Bubble Counter ( Single-head / Dual-head as your choose )