| Constructs | Items | Source |
| Purchase intentions | 7 | Theo et al. (2008) and Ekam (2013) |
| After sale service | 6 | Yoo, et al. (2000), Ahmad and Butt (2012) and Al-Dmour et al. (2013) |
| Price | 7 | Yoo, et al. (2000), Ahmad and Butt (2012) and Al-Dmour et al. (2013) |
| Product | 12 | Raoof (1997) |
| Brand loyalty | 4 | Sajjad Ahmad and Muhammad Mohsin Butt, (2012) |
| Brand product quality | 5 | Sajjad Ahmad and Muhammad Mohsin Butt, (2012) |