1. Material: plastic2. Use: probe sensor replacement accessories3. High adaptability, sturdy and durable4. Suitable for Smart Sensor PH808/PH818/PH828/PH838/PH8485. Weight: about 80 grams6. Note: This is just an accessory, not the machineSpecification: Package Weight One Package Weight 0.10kgs / 0.23lb One Package Size 10cm * 5cm * 4cm / 3.94inch * 1.97inch * 1.57inch Qty per Carton 288 Carton Weight 30.00kgs / 66.14lb Carton Size 50cm * 50cm * 60cm / 19.69inch * 19.69inch * 23.62inch Loading Container 20GP: 177 cartons * 288 pcs = 50976 pcs 40HQ: 412 cartons * 288 pcs = 118656 pcs